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undifferentiated mass of tissues that forms when small pieces of the parent plant, called explants, are grown in a special growth medium.
round or spherical-shaped bacteria.
a group or category in the biological classification system (the plural of taxon is taxa).
(also called the stele) the region that includes the pericycle and the vascular tissues in a...
the process of removing salt and other minerals from seawater, to make it drinkable.
the inner body tissue layer that forms the gut and other internal organs.